scholarly journals A multiplexed immunoassay system based upon reciprocating centrifugal microfluidics

2011 ◽  
Vol 82 (6) ◽  
pp. 064303 ◽  
Author(s):  
Zahra Noroozi ◽  
Horacio Kido ◽  
Régis Peytavi ◽  
Rie Nakajima-Sasaki ◽  
Algimantas Jasinskas ◽  
...  
2011 ◽  
Vol 60 (12) ◽  
pp. 1879-1881 ◽  
Author(s):  
Carmen L. Sheppard ◽  
Malcolm Guiver ◽  
John Hartley ◽  
Timothy G. Harrison ◽  
Robert C. George

2008 ◽  
Vol 80 (14) ◽  
pp. 5654-5659 ◽  
Author(s):  
Hong Liu ◽  
Zhifeng Fu ◽  
Zhanjun Yang ◽  
Feng Yan ◽  
Huangxian Ju

Author(s):  
Shancy Augustine ◽  
Pan Gu ◽  
Xiangjun Zheng ◽  
Toshikazu Nishida ◽  
Z. Hugh Fan

There is a need for low-cost immunoassays that measure the presence and concentration of multiple harmful agents in one device. Currently, comparable immunoassays employ a one-analyte-per-test format that is time consuming and not cost effective for the requirement of detecting multiple analytes in a single sample. For instance, if a spectrum of harmful agents, including E. coli O157, cholera toxin, and Salmonella typhimurium, should be simultaneously monitored in foods and drinking water, then a one-analyte-per-test would be inefficient. This work demonstrates a platform capable of simultaneous detection of multiple analytes in a single, low-cost, microvalve array-enabled multiplexed immunoassay. This multiplexed immunoassay platform is demonstrated in a prototype COC (cyclic olefin copolymer) device with a 2×3 array in which 6 analytes can be detected simultaneously. In order to contain and regulate the flow of reagents in the multichannel device, an array of microfluidic valves actuated by a thermally expandable material and microfabricated resistors have been developed to direct the flow to the necessary assay sites. The microvalve-based immunoassay is shown to be reliable, easy to operate, and compatible with large-scale integration. The all-plastic microvalves use paraffin wax as the thermally sensitive material which drastically reduces power consumption by latching upon closing so that pulsed power is required only to close and latch the microvalve until it is necessary to re-open the valve. The multiplexed detection scheme has been demonstrated by using three proteins, C reactive protein (CRP) and transferrin, both of which are biomarkers associated with traumatic brain injury (TBI) as well as bovine serum albumin (BSA) as the negative control. Since there are no external bulky pneumatic accessories required to operate/latch the microvalves in the device, this compact, thermally actuated and latching microvalve-enabled multiplexed immunoassay has the potential to realize a portable, low power, battery operated microfluidic device for biological assays.


Head & Neck ◽  
2011 ◽  
Vol 34 (10) ◽  
pp. 1369-1371 ◽  
Author(s):  
Luca Giovanella ◽  
Emanuela Toffalori ◽  
Renato Tozzoli ◽  
Marco Caputo ◽  
Luca Ceriani ◽  
...  

2018 ◽  
Vol 117 ◽  
pp. 464-473 ◽  
Author(s):  
Saraí M. Torres Delgado ◽  
Jan G. Korvink ◽  
Dario Mager

2020 ◽  
Vol 18 (8) ◽  
pp. 080006
Author(s):  
Ya-Hao Ge ◽  
Yi-Mei Lan ◽  
Xing-Rui Li ◽  
Yu-Wei Shan ◽  
Yu-Jie Yang ◽  
...  

Lab on a Chip ◽  
2019 ◽  
Vol 19 (1) ◽  
pp. 111-119 ◽  
Author(s):  
Hyun Jee Lee ◽  
Yoon Ho Roh ◽  
Hyeon Ung Kim ◽  
Sun Min Kim ◽  
Ki Wan Bong

Post-synthesis functionalized hydrogel microparticles were demonstrated in multiplex immunoassays with high sensitivity, a wide assay range, and fast detection.


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